Appliance base



FIG. 1 is a front perspective view of the appliance base;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a top view thereof.

The portion shown in dashed lines is shown for illustrative purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for the appliance base, as shown and described. 